use constant {
    SEC   => 0,
    MIN   => 1,
    HOUR  => 2,
    MDAY  => 3,
    MON   => 4,
    YEAR  => 5,
    WDAY  => 6,
    YDAY  => 7,
    ISDST => 8,
};

##</code><code>##

use constant Books_I_Own => 
{
	"The Wit and Wisdom of Mark Twain" => 1,
	"Attack of the Deranged Mutant Killer Monster Snow Goons" => 1,
	"Unix Power Tools" => 1,
}

##</code><code>##

  DB<2> x Books_I_Own
0  HASH(0x1c831b8)
   'Attack of the Deranged Mutant Killer Monster Snow Goons' => 1
   'The Wit and Wisdom of Mark Twain' => 1
   'Unix Power Tools' => 1